PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/11-20:12:50
G01     63.2           31.6               14.5 +/-    0.38      24.6 +/-    0.38  0.110 / 0.330
G07     141.0          25.3               20.5 +/-    0.88      39.8 +/-    0.88  0.100 / 0.370
G11     50.2           26.8               13.4 +/-    2.18      25.1 +/-    2.18  0.040 / 0.050
G13     266.3          36.1               21.2 +/-    1.52      33.0 +/-    1.52  0.030 / 0.050
G15     296.9          16.1               14.6 +/-    2.79      35.3 +/-    2.79  0.060 / 0.100
G17     245.1          71.0               19.8 +/-    0.42      20.9 +/-    0.42  0.050 / 0.090
G18     44.5           14.9               10.9 +/-    1.98      27.3 +/-    1.98  0.090 / 0.210
G19     229.7          46.8               22.5 +/-    2.10      29.5 +/-    2.10  0.080 / 0.180
G28     31.5           57.4               16.2 +/-    0.99      18.8 +/-    0.99  0.050 / 0.120
G30     141.4          54.1               18.3 +/-    0.55      22.0 +/-    0.55  0.050 / 0.140