PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/30-04:27:30
G01     37.9           10.2                2.9 +/-    7.11       8.2 +/-    7.11  0.080 / 0.060
G02     199.0          17.5                4.3 +/-    2.37      10.1 +/-    2.37  0.060 / 0.070
G06     175.9          45.6                5.0 +/-    0.68       6.7 +/-    0.68  0.070 / 0.400
G13     232.0          16.6                5.2 +/-    2.16      12.4 +/-    2.16  0.080 / 0.450
G17     13.9           64.5                3.5 +/-    0.45       3.8 +/-    0.45  0.160 / 0.160
G19     306.9          71.6                3.5 +/-    0.55       3.7 +/-    0.55  0.090 / 0.140
G24     313.7          24.9                2.0 +/-    1.49       4.0 +/-    1.49  0.030 / 0.030
G28     82.5           42.1                4.3 +/-    0.62       6.1 +/-    0.62  0.040 / 0.030
G30     155.2          16.3                6.1 +/-    1.74      14.8 +/-    1.74  0.160 / 0.250