PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/07-08:43:10
G01     105.6          26.2                5.8 +/-    1.12      11.0 +/-    1.12  0.030 / 0.030
G07     109.8          56.1                5.9 +/-    0.39       7.0 +/-    0.39  0.030 / 0.030
G08     41.5           17.0                1.9 +/-    0.63       4.6 +/-    0.63  0.030 / 0.050
G11     84.9           42.4                6.0 +/-    0.40       8.5 +/-    0.40  0.030 / 0.060
G13     308.2          29.9                3.0 +/-    2.23       5.3 +/-    2.23  0.070 / 0.170
G17     205.7          41.4                6.6 +/-    0.97       9.5 +/-    0.97  0.090 / 0.190
G18     76.9           24.0                3.7 +/-    0.42       7.4 +/-    0.42  0.070 / 0.150
G19     210.0          10.8               -2.7 +/-    6.83      -7.4 +/-    6.83  0.080 / 0.140
G28     318.4          60.9                4.6 +/-    1.06       5.2 +/-    1.06  0.210 / 0.340
G30     21.2           78.6                5.6 +/-    0.55       5.7 +/-    0.55  0.300 / 0.510