PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/27-20:43:00
G01     112.5          21.9               13.9 +/-    1.84      29.3 +/-    1.84  0.030 / 0.040
G07     101.3          57.5               15.0 +/-    1.11      17.5 +/-    1.11  0.030 / 0.040
G08     42.5           24.2               11.0 +/-    1.51      21.8 +/-    1.51  0.210 / 0.160
G09     176.4          20.2               18.2 +/-    3.76      39.9 +/-    3.76  0.170 / 0.260
G11     95.3           42.3               14.4 +/-    0.57      20.2 +/-    0.57  0.050 / 0.060
G13     313.5          25.4               11.9 +/-    1.14      23.1 +/-    1.14  0.050 / 0.050
G17     202.6          32.9               16.9 +/-    1.07      28.0 +/-    1.07  0.130 / 0.180
G18     83.9           22.6               13.0 +/-    2.73      26.8 +/-    2.73  0.130 / 0.190
G28     298.8          57.6               13.2 +/-    1.65      15.3 +/-    1.65  0.030 / 0.030
G30     4.5            74.8               14.4 +/-    0.49      14.9 +/-    0.49  0.030 / 0.030