PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/09/19-10:28:10
G01     89.6           31.9                5.7 +/-    1.02       9.6 +/-    1.02  0.050 / 0.040
G07     126.1          44.3                7.4 +/-    0.79      10.1 +/-    0.79  0.050 / 0.050
G11     66.7           38.9                5.8 +/-    1.12       8.5 +/-    1.12  0.070 / 0.090
G13     293.6          36.5                5.2 +/-    3.04       8.0 +/-    3.04  0.080 / 0.110
G17     214.4          55.8                6.2 +/-    0.91       7.3 +/-    0.91  0.030 / 0.020
G18     61.9           23.1                4.3 +/-    2.06       8.8 +/-    2.06  0.020 / 0.020
G19     215.2          23.3                4.4 +/-    2.40       8.9 +/-    2.40  0.090 / 0.100
G28     348.1          61.8                5.1 +/-    0.67       5.7 +/-    0.67  0.100 / 0.120
G30     102.7          77.3                5.6 +/-    0.50       5.7 +/-    0.50  0.060 / 0.110