PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/17-19:57:50
G07     5.7            66.0               11.2 +/-    0.84      12.1 +/-    0.84  0.040 / 0.040
G08     75.6           50.8               11.3 +/-    0.96      14.2 +/-    0.96  0.030 / 0.040
G09     182.9          61.2               12.7 +/-    1.11      14.3 +/-    1.11  0.040 / 0.040
G11     136.1          22.0               11.9 +/-    3.11      24.9 +/-    3.11  0.040 / 0.030
G23     159.1          30.3               12.6 +/-    2.59      21.9 +/-    2.59  0.090 / 0.190
G27     46.7           26.0                9.3 +/-    2.11      17.7 +/-    2.11  0.060 / 0.140
G28     246.1          35.2               13.7 +/-    1.62      21.7 +/-    1.62  0.030 / 0.060
G30     312.1          44.0                9.9 +/-    0.92      13.5 +/-    0.92  0.040 / 0.040