PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/21-23:12:40
G01     49.5           25.1                8.7 +/-    2.56      17.1 +/-    2.56  0.080 / 0.140
G06     180.3          21.7               10.8 +/-    2.23      22.9 +/-    2.23  0.130 / 0.170
G11     44.1           13.8                7.7 +/-    1.47      19.8 +/-    1.47  0.040 / 0.040
G13     249.4          30.7               10.1 +/-    2.04      17.4 +/-    2.04  0.030 / 0.040
G15     282.8          15.7                8.7 +/-    0.65      21.3 +/-    0.65  0.050 / 0.040
G17     324.4          78.8                9.6 +/-    0.40       9.8 +/-    0.40  0.050 / 0.040
G19     246.2          60.0                9.0 +/-    0.42      10.2 +/-    0.42  0.050 / 0.070
G28     47.5           55.2                8.9 +/-    0.63      10.5 +/-    0.63  0.040 / 0.060
G30     149.7          40.5               11.3 +/-    1.50      16.2 +/-    1.50  0.080 / 0.120