PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/06-19:58:10
G01     82.2           33.1               15.3 +/-    0.74      25.2 +/-    0.74  0.090 / 0.240
G07     131.2          40.0               14.6 +/-    0.99      21.3 +/-    0.99  0.120 / 0.220
G11     62.5           37.4               13.4 +/-    0.71      20.3 +/-    0.71  0.030 / 0.080
G13     286.7          37.4               10.8 +/-    1.27      16.5 +/-    1.27  0.030 / 0.070
G15     310.6          12.5                9.0 +/-    1.59      23.7 +/-    1.59  0.050 / 0.110
G17     220.7          56.3               13.4 +/-    1.30      15.7 +/-    1.30  0.070 / 0.120
G18     57.6           22.4               11.6 +/-    1.70      24.2 +/-    1.70  0.040 / 0.110
G19     218.1          32.1               14.3 +/-    0.78      23.9 +/-    0.78  0.050 / 0.090
G28     2.9            61.0               12.4 +/-    0.61      14.0 +/-    0.61  0.040 / 0.040
G30     122.4          69.4               12.9 +/-    0.92      13.7 +/-    0.92  0.040 / 0.040