PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/12-23:28:00
G01     91.1           31.7                9.7 +/-    1.58      16.5 +/-    1.58  0.040 / 0.060
G07     124.7          46.6               11.9 +/-    0.72      15.7 +/-    0.72  0.030 / 0.050
G08     42.5           11.2                7.4 +/-    1.91      20.2 +/-    1.91  0.090 / 0.080
G11     72.6           41.7                8.8 +/-    0.74      12.5 +/-    0.74  0.080 / 0.110
G13     296.0          35.3                8.8 +/-    3.71      13.9 +/-    3.71  0.050 / 0.040
G17     214.6          50.0               11.1 +/-    1.08      14.0 +/-    1.08  0.050 / 0.050
G19     214.3          26.3               11.3 +/-    1.07      21.5 +/-    1.07  0.220 / 0.190
G28     348.9          61.7                8.3 +/-    0.50       9.3 +/-    0.50  0.250 / 0.360
G30     107.1          73.3               11.1 +/-    0.95      11.5 +/-    0.95  0.050 / 0.060