PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/16-13:12:40
G01     320.1          14.6                2.4 +/-    2.58       6.1 +/-    2.58  0.030 / 0.040
G08     264.7          14.9                5.0 +/-    1.13      12.5 +/-    1.13  0.030 / 0.040
G10     73.2           55.6                3.5 +/-    0.75       4.2 +/-    0.75  0.180 / 0.250
G11     308.4          19.1                2.6 +/-    0.97       5.8 +/-    0.97  0.250 / 0.270
G14     280.2          67.7                4.0 +/-    0.45       4.3 +/-    0.45  0.210 / 0.230
G27     226.0          10.9                4.0 +/-    3.26      11.0 +/-    3.26  0.170 / 0.220
G31     175.8          39.0                5.0 +/-    1.41       7.4 +/-    1.41  0.030 / 0.030
G32     2.3            69.5                2.8 +/-    0.30       2.9 +/-    0.30  0.030 / 0.030