PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/12-00:28:00
G01     90.9           31.4                8.5 +/-    0.80      14.4 +/-    0.80  0.120 / 0.190
G07     125.3          42.3                8.4 +/-    0.39      11.8 +/-    0.39  0.070 / 0.160
G11     67.6           39.4                6.6 +/-    1.24       9.7 +/-    1.24  0.080 / 0.110
G13     295.1          36.4                9.4 +/-    2.06      14.5 +/-    2.06  0.080 / 0.110
G17     212.7          55.2                9.9 +/-    0.66      11.8 +/-    0.66  0.040 / 0.060
G18     60.8           22.1                6.4 +/-    1.59      13.5 +/-    1.59  0.030 / 0.060
G19     213.8          25.5                9.4 +/-    1.14      18.1 +/-    1.14  0.050 / 0.040
G28     340.4          61.7                6.5 +/-    0.63       7.3 +/-    0.63  0.040 / 0.050
G30     100.4          77.1                8.0 +/-    0.38       8.2 +/-    0.38  0.100 / 0.180