PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/10/15-04:57:40
G03     189.4          15.9                5.6 +/-    0.99      13.6 +/-    0.99  0.130 / 0.240
G07     298.1          42.4                6.6 +/-    2.16       9.2 +/-    2.16  0.150 / 0.260
G08     133.5          34.5                9.9 +/-    0.75      15.9 +/-    0.75  0.030 / 0.080
G09     319.4          76.5                6.5 +/-    0.56       6.7 +/-    0.56  0.030 / 0.080
G16     41.8           31.3                2.5 +/-    0.89       4.3 +/-    0.89  0.050 / 0.080
G23     132.8          74.8                5.8 +/-    0.94       6.0 +/-    0.94  0.050 / 0.080
G27     93.0           36.3                6.8 +/-    0.84      10.5 +/-    0.84  0.030 / 0.040
G30     278.3          15.3                5.3 +/-    2.23      13.1 +/-    2.23  0.030 / 0.040