PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/25-04:57:40
G02     199.4          21.7                7.1 +/-    2.04      15.1 +/-    2.04  0.080 / 0.090
G06     175.2          50.1                6.1 +/-    1.33       7.7 +/-    1.33  0.070 / 0.070
G13     228.8          13.8                7.1 +/-    4.47      18.3 +/-    4.47  0.200 / 0.480
G17     20.0           61.0                2.7 +/-    0.41       3.0 +/-    0.41  0.200 / 0.510
G19     322.5          71.3                3.1 +/-    0.91       3.3 +/-    0.91  0.030 / 0.040
G24     311.3          28.1                2.1 +/-    1.20       3.8 +/-    1.20  0.030 / 0.040
G28     87.6           39.7                4.7 +/-    1.14       6.9 +/-    1.14  0.060 / 0.120
G30     155.9          12.6                7.0 +/-    2.73      18.4 +/-    2.73  0.060 / 0.150