PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/15-21:58:00
G01     100.7          28.1               12.8 +/-    1.15      23.4 +/-    1.15  0.030 / 0.040
G07     116.9          48.7               13.4 +/-    0.51      17.2 +/-    0.51  0.030 / 0.040
G08     41.5           13.9                8.5 +/-    2.18      21.6 +/-    2.18  0.100 / 0.120
G11     78.7           42.2               12.6 +/-    1.27      17.7 +/-    1.27  0.100 / 0.110
G13     304.2          32.7                9.3 +/-    3.97      15.4 +/-    3.97  0.060 / 0.120
G17     207.3          45.5               13.4 +/-    1.03      17.9 +/-    1.03  0.070 / 0.130
G18     70.8           23.6               10.7 +/-    0.99      21.5 +/-    0.99  0.040 / 0.060
G19     210.4          18.0                3.5 +/-   16.06       8.0 +/-   16.06  0.040 / 0.070
G28     321.7          60.7               10.7 +/-    0.52      12.1 +/-    0.52  0.030 / 0.030
G30     58.0           79.8               12.2 +/-    0.60      12.3 +/-    0.60  0.030 / 0.020