PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/12-21:27:40
G03     188.8          18.5               10.9 +/-    1.36      24.8 +/-    1.36  0.080 / 0.070
G07     291.2          37.8               10.9 +/-    1.51      16.5 +/-    1.51  0.090 / 0.080
G08     142.7          28.2               11.8 +/-    1.73      21.5 +/-    1.73  0.080 / 0.100
G09     319.9          62.7                9.9 +/-    0.68      10.9 +/-    0.68  0.090 / 0.100
G16     42.6           38.8                8.3 +/-    1.20      12.3 +/-    1.20  0.050 / 0.090
G23     119.6          77.2                9.1 +/-    0.57       9.3 +/-    0.57  0.050 / 0.070
G26     43.6           10.4                8.7 +/-    2.34      24.0 +/-    2.34  0.150 / 0.170
G27     97.1           34.2                9.9 +/-    1.02      15.9 +/-    1.02  0.180 / 0.260
G30     276.1          16.9               10.0 +/-    1.26      23.7 +/-    1.26  0.030 / 0.030