PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/22-19:12:50
G01     71.2           33.0               10.2 +/-    1.30      16.8 +/-    1.30  0.110 / 0.220
G07     137.3          31.7               13.5 +/-    1.36      22.8 +/-    1.36  0.090 / 0.250
G11     54.4           31.6               10.1 +/-    1.73      17.1 +/-    1.73  0.050 / 0.090
G13     275.0          37.5               13.0 +/-    2.34      19.8 +/-    2.34  0.040 / 0.090
G15     303.4          14.9                8.6 +/-    2.64      21.5 +/-    2.64  0.030 / 0.030
G17     231.9          65.7               14.0 +/-    0.74      15.2 +/-    0.74  0.030 / 0.040
G18     49.5           18.6               10.5 +/-    2.41      23.9 +/-    2.41  0.240 / 0.150
G19     223.9          40.1               14.2 +/-    1.20      20.6 +/-    1.20  0.160 / 0.240
G28     19.4           59.3               11.5 +/-    1.05      13.1 +/-    1.05  0.080 / 0.080
G30     135.1          61.4               12.8 +/-    0.28      14.4 +/-    0.28  0.060 / 0.090