PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/11/23-06:42:40
G01     67.0           32.3                4.6 +/-    0.90       7.7 +/-    0.90  0.040 / 0.040
G07     139.0          26.3                7.0 +/-    1.11      13.4 +/-    1.11  0.040 / 0.040
G11     50.5           27.1                3.6 +/-    2.06       6.7 +/-    2.06  0.060 / 0.110
G13     269.8          37.4                1.5 +/-    0.93       2.3 +/-    0.93  0.070 / 0.100
G15     301.7          14.7                2.2 +/-    1.70       5.5 +/-    1.70  0.030 / 0.030
G17     242.3          74.7                7.9 +/-    0.80       8.1 +/-    0.80  0.030 / 0.030
G19     226.2          42.2                7.2 +/-    2.61      10.1 +/-    2.61  0.040 / 0.060
G28     21.8           59.2                6.4 +/-    0.44       7.4 +/-    0.44  0.040 / 0.060
G30     139.0          60.4                9.3 +/-    0.76      10.5 +/-    0.76  0.050 / 0.090