PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-01:42:50
G01     109.3          24.4                7.3 +/-    1.69      14.4 +/-    1.69  0.050 / 0.050
G07     102.9          60.0                5.6 +/-    0.90       6.4 +/-    0.90  0.030 / 0.070
G08     42.4           23.6                2.5 +/-    2.06       5.0 +/-    2.06  0.070 / 0.110
G09     176.0          16.6                6.2 +/-    1.71      14.9 +/-    1.71  0.100 / 0.120
G11     95.0           42.8                5.0 +/-    0.80       7.0 +/-    0.80  0.040 / 0.030
G13     312.0          26.3                3.8 +/-    2.01       7.3 +/-    2.01  0.040 / 0.030
G17     205.3          34.9                6.8 +/-    1.17      10.9 +/-    1.17  0.070 / 0.090
G19     208.5          11.5               -0.1 +/-    8.33      -0.3 +/-    8.33  0.110 / 0.080
G28     314.8          60.8                3.5 +/-    0.84       4.0 +/-    0.84  0.130 / 0.140
G30     32.6           77.4                3.9 +/-    0.59       4.0 +/-    0.59  0.050 / 0.160