PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/19-03:57:40
G01     61.8           31.1                3.4 +/-    0.96       5.8 +/-    0.96  0.050 / 0.070
G06     182.9          11.0               -7.8 +/-   35.31     -21.2 +/-   35.31  0.040 / 0.050
G07     141.6          23.7                5.6 +/-    1.29      11.2 +/-    1.29  0.090 / 0.160
G11     49.9           26.2                3.5 +/-    1.38       6.7 +/-    1.38  0.060 / 0.160
G13     265.7          35.5                5.9 +/-    1.30       9.2 +/-    1.30  0.090 / 0.170
G15     294.6          16.8                2.6 +/-    1.72       6.2 +/-    1.72  0.080 / 0.200
G17     253.4          75.1                5.6 +/-    0.70       5.7 +/-    0.70  0.030 / 0.030
G19     231.4          50.2                7.1 +/-    0.93       8.9 +/-    0.93  0.020 / 0.030
G28     34.3           56.8                2.3 +/-    0.57       2.7 +/-    0.57  0.250 / 0.350
G30     141.8          50.6                5.4 +/-    1.10       6.8 +/-    1.10  0.190 / 0.400