PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/13-11:13:10
G01     78.1           33.3                3.2 +/-    0.95       5.3 +/-    0.95  0.030 / 0.030
G07     133.6          35.9                4.9 +/-    0.86       7.7 +/-    0.86  0.030 / 0.030
G11     57.4           33.8                1.7 +/-    0.88       2.8 +/-    0.88  0.070 / 0.210
G13     281.9          38.1                3.9 +/-    1.05       5.9 +/-    1.05  0.070 / 0.270
G15     312.2          10.5               -6.2 +/-   17.15     -17.1 +/-   17.15  0.030 / 0.060
G17     224.2          65.1                5.3 +/-    1.53       5.8 +/-    1.53  0.040 / 0.060
G18     53.0           20.1                1.5 +/-    1.49       3.4 +/-    1.49  0.040 / 0.080
G19     220.0          31.8                4.6 +/-    2.96       7.8 +/-    2.96  0.040 / 0.080
G28     6.8            60.8                3.1 +/-    0.65       3.5 +/-    0.65  0.150 / 0.360
G30     127.4          69.3                4.9 +/-    0.46       5.2 +/-    0.46  0.130 / 0.280