PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/02-16:27:50
G01     69.7           32.8               10.7 +/-    0.83      17.6 +/-    0.83  0.040 / 0.060
G07     138.0          30.3               11.2 +/-    1.38      19.4 +/-    1.38  0.030 / 0.050
G11     52.9           29.9               10.1 +/-    1.13      17.7 +/-    1.13  0.030 / 0.040
G13     273.1          37.5               12.1 +/-    0.98      18.4 +/-    0.98  0.030 / 0.050
G15     303.5          14.5                8.7 +/-    1.36      21.9 +/-    1.36  0.040 / 0.080
G17     234.8          69.0               12.6 +/-    0.55      13.4 +/-    0.55  0.040 / 0.080
G18     48.2           17.7                8.6 +/-    0.82      20.1 +/-    0.82  0.070 / 0.090
G19     224.8          40.3               13.7 +/-    1.49      19.8 +/-    1.49  0.060 / 0.140
G28     21.2           59.1               11.6 +/-    0.34      13.3 +/-    0.34  0.050 / 0.160
G30     136.6          61.4               12.0 +/-    0.66      13.4 +/-    0.66  0.050 / 0.170