PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/07-01:12:50
G01     50.0           25.4                7.1 +/-    2.21      13.8 +/-    2.21  0.040 / 0.040
G06     178.7          24.3                9.4 +/-    1.06      18.8 +/-    1.06  0.040 / 0.040
G07     146.4          12.6                7.1 +/-    2.91      18.7 +/-    2.91  0.100 / 0.090
G11     45.5           17.5                6.3 +/-    2.08      14.8 +/-    2.08  0.100 / 0.100
G13     251.0          30.2                8.5 +/-    1.31      14.8 +/-    1.31  0.100 / 0.130
G15     282.8          15.9                7.5 +/-    0.85      18.3 +/-    0.85  0.100 / 0.120
G17     303.0          77.9                8.1 +/-    0.45       8.3 +/-    0.45  0.030 / 0.020
G19     247.4          60.2                7.2 +/-    0.34       8.2 +/-    0.34  0.030 / 0.020
G28     53.6           52.4                6.9 +/-    1.36       8.4 +/-    1.36  0.110 / 0.130
G30     148.9          37.7               10.3 +/-    0.83      15.6 +/-    0.83  0.080 / 0.140