PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-16:58:10
G07     45.9           69.9               12.7 +/-    0.63      13.4 +/-    0.63  0.040 / 0.050
G08     53.0           42.7               11.3 +/-    0.90      15.8 +/-    0.90  0.040 / 0.050
G09     178.3          37.9               14.1 +/-    0.59      21.3 +/-    0.59  0.030 / 0.040
G11     121.1          34.1               14.3 +/-    1.45      23.1 +/-    1.45  0.030 / 0.040
G17     200.7          10.9               -2.1 +/-   31.20      -5.8 +/-   31.20  0.040 / 0.050
G18     105.8          15.7               13.6 +/-    1.01      33.3 +/-    1.01  0.040 / 0.040
G28     273.7          52.1               14.4 +/-    0.57      17.7 +/-    0.57  0.070 / 0.130
G30     331.7          59.5               10.7 +/-    0.99      12.2 +/-    0.99  0.070 / 0.120