PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/19-00:13:00
G01     83.3           32.7                6.5 +/-    0.90      10.8 +/-    0.90  0.040 / 0.070
G07     130.4          36.5                8.8 +/-    0.66      13.5 +/-    0.66  0.050 / 0.070
G11     60.9           36.3                7.8 +/-    1.39      12.1 +/-    1.39  0.120 / 0.130
G13     287.4          38.0                8.9 +/-    1.42      13.4 +/-    1.42  0.120 / 0.170
G15     311.2          12.3                6.7 +/-    2.96      17.7 +/-    2.96  0.090 / 0.110
G17     218.2          61.5                9.2 +/-    1.43      10.3 +/-    1.43  0.100 / 0.100
G18     54.9           20.3                5.9 +/-    2.74      12.9 +/-    2.74  0.040 / 0.040
G19     216.9          31.5                8.3 +/-    2.49      14.1 +/-    2.49  0.040 / 0.030
G28     352.8          61.6                6.4 +/-    0.67       7.2 +/-    0.67  0.120 / 0.230
G30     119.5          72.0                8.7 +/-    0.83       9.1 +/-    0.83  0.120 / 0.180