PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/19-08:28:10
G01     88.0           32.2                5.3 +/-    0.69       8.9 +/-    0.69  0.030 / 0.030
G07     127.4          42.7                7.0 +/-    0.88       9.7 +/-    0.88  0.030 / 0.030
G11     64.9           38.1                3.4 +/-    0.30       5.2 +/-    0.30  0.050 / 0.060
G13     292.0          36.9                4.8 +/-    1.20       7.3 +/-    1.20  0.050 / 0.060
G17     215.3          57.8                6.1 +/-    1.12       7.0 +/-    1.12  0.080 / 0.110
G18     60.0           22.4                2.9 +/-    0.73       6.1 +/-    0.73  0.080 / 0.080
G19     215.6          25.3                6.5 +/-    2.07      12.6 +/-    2.07  0.070 / 0.120
G28     349.9          61.7                2.1 +/-    0.72       2.3 +/-    0.72  0.070 / 0.120
G30     107.5          76.5                5.9 +/-    0.67       6.1 +/-    0.67  0.060 / 0.130