PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-19:27:50
G07     340.3          60.5               11.4 +/-    0.39      12.9 +/-    0.39  0.040 / 0.040
G08     97.5           54.2               12.7 +/-    0.80      15.3 +/-    0.80  0.040 / 0.030
G09     187.7          68.7               12.6 +/-    0.26      13.4 +/-    0.26  0.060 / 0.110
G11     144.2          15.9               15.7 +/-    2.34      38.2 +/-    2.34  0.060 / 0.090
G23     155.9          32.7               11.6 +/-    0.76      19.3 +/-    0.76  0.080 / 0.070
G27     50.0           28.2               10.2 +/-    2.36      18.5 +/-    2.36  0.080 / 0.120
G28     242.0          34.1               13.4 +/-    1.28      21.6 +/-    1.28  0.030 / 0.030
G30     307.8          40.6               11.5 +/-    1.25      16.6 +/-    1.25  0.030 / 0.040