PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/23-15:12:50
G01     63.9           31.7               10.0 +/-    0.31      16.9 +/-    0.31  0.040 / 0.040
G07     140.6          25.5               10.6 +/-    0.91      20.4 +/-    0.91  0.040 / 0.050
G11     49.6           25.8                9.9 +/-    0.60      18.9 +/-    0.60  0.070 / 0.090
G13     266.6          36.4               10.8 +/-    1.18      16.7 +/-    1.18  0.070 / 0.090
G15     299.6          14.9                5.9 +/-    1.15      14.8 +/-    1.15  0.070 / 0.180
G17     247.8          74.3               11.9 +/-    0.91      12.3 +/-    0.91  0.070 / 0.210
G18     44.4           14.7                7.9 +/-    1.63      19.8 +/-    1.63  0.050 / 0.050
G19     228.8          44.4               12.0 +/-    1.40      16.3 +/-    1.40  0.050 / 0.070
G28     29.7           57.8               10.4 +/-    0.56      12.0 +/-    0.56  0.040 / 0.110
G30     141.3          56.9               10.0 +/-    0.97      11.7 +/-    0.97  0.040 / 0.120