PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/18-01:28:10
G01     47.9           23.8                4.0 +/-    1.32       8.0 +/-    1.32  0.060 / 0.030
G06     180.3          23.5                7.5 +/-    3.24      15.3 +/-    3.24  0.050 / 0.040
G11     43.7           11.7                2.9 +/-    2.53       7.9 +/-    2.53  0.040 / 0.050
G13     247.2          29.4                5.4 +/-    0.80       9.6 +/-    0.80  0.030 / 0.040
G15     281.1          15.2                3.3 +/-    4.20       8.1 +/-    4.20  0.180 / 0.230
G17     338.1          77.5                5.4 +/-    0.43       5.5 +/-    0.43  0.250 / 0.350
G19     249.7          61.2                7.1 +/-    0.61       8.0 +/-    0.61  0.100 / 0.140
G24     318.2          12.3                1.1 +/-   20.18       2.9 +/-   20.18  0.160 / 0.120
G28     51.8           54.0                5.9 +/-    2.03       7.2 +/-    2.03  0.120 / 0.450
G30     150.9          39.1                7.6 +/-    0.90      11.3 +/-    0.90  0.170 / 0.500