PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/12-21:43:00
G01     113.1          21.5               15.5 +/-    1.66      32.9 +/-    1.66  0.040 / 0.060
G07     99.8           58.4               13.1 +/-    0.31      15.1 +/-    0.31  0.040 / 0.050
G08     42.5           24.4                8.3 +/-    0.99      16.3 +/-    0.99  0.080 / 0.220
G09     176.3          20.6               14.3 +/-    1.22      31.0 +/-    1.22  0.070 / 0.200
G11     96.0           42.2               14.0 +/-    0.79      19.7 +/-    0.79  0.040 / 0.030
G13     314.0          24.8               10.9 +/-    3.22      21.3 +/-    3.22  0.030 / 0.040
G17     202.3          32.6               14.6 +/-    2.03      24.2 +/-    2.03  0.080 / 0.150
G18     84.2           22.3               11.7 +/-    1.69      24.2 +/-    1.69  0.080 / 0.160
G28     298.1          57.5               11.8 +/-    0.92      13.7 +/-    0.92  0.030 / 0.050
G30     1.0            74.0               12.0 +/-    1.21      12.5 +/-    1.21  0.030 / 0.050