PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/01-18:42:40
G01     65.3           32.1                9.7 +/-    1.89      16.3 +/-    1.89  0.090 / 0.430
G07     140.1          27.0               14.1 +/-    3.46      26.4 +/-    3.46  0.090 / 0.350
G11     50.9           27.8                8.1 +/-    3.26      14.9 +/-    3.26  0.060 / 0.110
G13     268.5          36.7               10.4 +/-    2.99      16.1 +/-    2.99  0.050 / 0.110
G15     299.1          15.6                8.0 +/-    3.27      19.6 +/-    3.27  0.030 / 0.040
G17     241.8          70.6               13.1 +/-    1.61      13.8 +/-    1.61  0.030 / 0.040
G18     45.6           15.9                7.9 +/-    1.66      19.3 +/-    1.66  0.030 / 0.060
G19     228.0          44.5               14.1 +/-    2.33      19.2 +/-    2.33  0.030 / 0.050
G28     28.1           58.0                9.2 +/-    1.85      10.6 +/-    1.85  0.060 / 0.130
G30     140.0          56.7               12.6 +/-    2.56      14.8 +/-    2.56  0.090 / 0.140