PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/04-07:43:10
G01     46.4           22.3                4.4 +/-    2.67       9.1 +/-    2.67  0.040 / 0.060
G06     180.1          26.5                6.4 +/-    2.86      12.0 +/-    2.86  0.040 / 0.050
G11     43.8           10.9                3.4 +/-    1.82       9.3 +/-    1.82  0.020 / 0.020
G13     247.0          27.5                4.8 +/-    2.38       8.9 +/-    2.38  0.020 / 0.020
G15     278.5          15.0                1.3 +/-    1.38       3.3 +/-    1.38  0.090 / 0.250
G17     342.6          76.0                7.2 +/-    0.55       7.4 +/-    0.55  0.090 / 0.260
G19     257.9          65.2                6.9 +/-    0.87       7.6 +/-    0.87  0.110 / 0.130
G24     319.0          11.0              -13.8 +/-   22.75     -37.6 +/-   22.75  0.110 / 0.130
G28     60.7           50.3                5.7 +/-    0.66       7.2 +/-    0.66  0.160 / 0.250
G30     151.3          35.1                8.7 +/-    1.04      13.8 +/-    1.04  0.190 / 0.330