PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/13-19:42:40
G03     218.1          63.1               10.8 +/-    0.94      12.0 +/-    0.94  0.050 / 0.050
G07     251.7          10.6               -2.9 +/-   26.02      -7.9 +/-   26.02  0.050 / 0.070
G09     306.5          21.7                8.5 +/-    1.28      17.9 +/-    1.28  0.040 / 0.040
G14     104.2          11.6                9.2 +/-    2.53      24.7 +/-    2.53  0.030 / 0.040
G16     115.8          62.9               11.5 +/-    0.99      12.8 +/-    0.99  0.120 / 0.240
G22     190.1          48.3               11.7 +/-    1.76      15.1 +/-    1.76  0.110 / 0.180
G23     325.3          55.0                9.7 +/-    0.68      11.6 +/-    0.68  0.090 / 0.520
G26     60.5           48.0                7.9 +/-    0.46      10.3 +/-    0.46  0.090 / 0.480
G31     55.6           14.7                7.2 +/-    2.56      17.9 +/-    2.56  0.040 / 0.070