PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-22:12:50
G01     89.6           32.0               12.9 +/-    0.67      21.8 +/-    0.67  0.080 / 0.120
G07     125.9          45.5               14.2 +/-    0.84      19.0 +/-    0.84  0.070 / 0.110
G08     42.7           11.1                8.6 +/-    2.14      23.3 +/-    2.14  0.040 / 0.060
G11     70.4           40.9               11.7 +/-    0.52      16.7 +/-    0.52  0.040 / 0.060
G13     294.5          35.8               12.1 +/-    1.30      19.0 +/-    1.30  0.040 / 0.060
G17     215.6          50.2               15.6 +/-    0.90      19.6 +/-    0.90  0.040 / 0.060
G18     63.8           24.0               10.4 +/-    0.78      20.8 +/-    0.78  0.160 / 0.330
G19     214.9          27.2               15.7 +/-    3.63      29.2 +/-    3.63  0.100 / 0.330
G28     351.3          61.7               10.3 +/-    0.58      11.5 +/-    0.58  0.050 / 0.090
G30     109.5          73.1               12.1 +/-    1.12      12.6 +/-    1.12  0.050 / 0.100