PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/08/19-11:28:00
G01     121.0          16.4                3.7 +/-    1.17       8.8 +/-    1.17  0.030 / 0.030
G07     75.0           67.4                4.5 +/-    0.71       4.8 +/-    0.71  0.030 / 0.030
G08     45.2           31.5                2.8 +/-    1.70       4.7 +/-    1.70  0.030 / 0.020
G09     175.5          26.0                4.8 +/-    2.89       9.1 +/-    2.89  0.020 / 0.030
G11     107.9          39.1                5.7 +/-    1.03       8.4 +/-    1.03  0.120 / 0.190
G13     318.5          18.0                1.6 +/-    1.72       3.7 +/-    1.72  0.130 / 0.180
G17     200.6          23.7                5.4 +/-    2.69      10.8 +/-    2.69  0.130 / 0.220
G18     95.8           19.9                3.4 +/-    1.71       7.4 +/-    1.71  0.130 / 0.190
G28     288.2          56.3                3.5 +/-    1.92       4.2 +/-    1.92  0.090 / 0.160
G30     339.9          65.5                4.3 +/-    0.76       4.6 +/-    0.76  0.080 / 0.180