PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/03-17:57:50
G07     6.1            66.8               10.7 +/-    0.45      11.5 +/-    0.45  0.040 / 0.060
G08     71.4           52.0               10.8 +/-    0.36      13.3 +/-    0.36  0.040 / 0.060
G09     181.0          53.7               12.1 +/-    3.56      14.6 +/-    3.56  0.090 / 0.120
G11     134.2          24.9               11.9 +/-    1.59      23.3 +/-    1.59  0.090 / 0.150
G27     41.8           19.3                8.3 +/-    1.38      18.7 +/-    1.38  0.030 / 0.050
G28     255.3          43.5               11.0 +/-    2.20      15.1 +/-    2.20  0.030 / 0.040
G30     318.4          49.1               10.0 +/-    0.72      12.8 +/-    0.72  0.090 / 0.220