PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-23:42:50
G01     47.6           23.6                7.4 +/-    1.32      14.9 +/-    1.32  0.240 / 0.360
G06     180.1          23.8               10.5 +/-    2.24      21.1 +/-    2.24  0.430 / 0.440
G11     43.6           11.7                7.6 +/-    2.37      20.4 +/-    2.37  0.060 / 0.150
G13     246.9          29.3                9.7 +/-    1.95      17.3 +/-    1.95  0.160 / 0.210
G15     280.5          15.3                7.1 +/-    2.00      17.5 +/-    2.00  0.120 / 0.180
G17     336.5          77.5                8.5 +/-    0.56       8.7 +/-    0.56  0.080 / 0.150
G19     250.4          61.8                9.8 +/-    0.44      11.0 +/-    0.44  0.200 / 0.300
G24     318.3          11.9                3.7 +/-   19.68      10.0 +/-   19.68  0.250 / 0.380
G28     51.5           54.2                9.2 +/-    0.98      11.1 +/-    0.98  0.060 / 0.060
G30     150.8          38.2               11.2 +/-    1.13      16.8 +/-    1.13  0.070 / 0.080