PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/13-21:42:40
G07     25.9           69.2               11.7 +/-    0.84      12.4 +/-    0.84  0.090 / 0.070
G08     61.2           48.5               11.6 +/-    0.82      14.9 +/-    0.82  0.080 / 0.120
G09     180.2          46.1               14.3 +/-    1.84      18.9 +/-    1.84  0.160 / 0.350
G11     129.6          29.4               15.1 +/-    2.29      26.7 +/-    2.29  0.170 / 0.370
G23     159.5          13.4               13.8 +/-    1.30      35.7 +/-    1.30  0.060 / 0.040
G27     38.8           13.3                8.6 +/-    2.96      22.4 +/-    2.96  0.070 / 0.050
G28     264.8          48.6               12.6 +/-    4.39      16.2 +/-    4.39  0.110 / 0.220
G30     327.8          56.4               10.9 +/-    0.72      12.8 +/-    0.72  0.120 / 0.230