PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/31-18:58:10
G07     5.2            65.8               12.4 +/-    0.44      13.5 +/-    0.44  0.040 / 0.040
G08     77.3           51.2               13.2 +/-    0.65      16.5 +/-    0.65  0.030 / 0.030
G09     183.6          62.3               14.2 +/-    0.67      15.8 +/-    0.67  0.130 / 0.100
G11     136.8          21.5               14.4 +/-    3.21      30.4 +/-    3.21  0.100 / 0.130
G23     158.8          30.7               13.5 +/-    1.46      23.3 +/-    1.46  0.040 / 0.030
G27     47.2           26.4               10.1 +/-    3.17      19.2 +/-    3.17  0.040 / 0.030
G28     245.3          34.4               14.8 +/-    1.64      23.8 +/-    1.64  0.080 / 0.160
G30     311.7          43.8               12.0 +/-    1.06      16.4 +/-    1.06  0.090 / 0.170