PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/23-19:13:10
G07     303.0          44.2               12.6 +/-    1.47      17.2 +/-    1.47  0.050 / 0.100
G08     135.8          37.2               18.2 +/-    0.82      27.8 +/-    0.82  0.050 / 0.100
G09     311.2          74.7               11.7 +/-    0.67      12.1 +/-    0.67  0.030 / 0.040
G16     41.7           26.6               11.3 +/-    2.01      21.3 +/-    2.01  0.030 / 0.040
G23     140.5          63.7               15.2 +/-    0.95      16.7 +/-    0.95  0.040 / 0.030
G27     82.5           36.9               14.3 +/-    0.89      21.9 +/-    0.89  0.030 / 0.030
G30     284.6          22.5               12.8 +/-    1.05      26.6 +/-    1.05  0.040 / 0.070