PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-01:28:00
G07     7.7            66.9                4.9 +/-    0.44       5.3 +/-    0.44  0.170 / 0.150
G08     68.6           50.3                6.0 +/-    0.57       7.6 +/-    0.57  0.150 / 0.140
G09     181.5          54.2               11.1 +/-    0.75      13.3 +/-    0.75  0.030 / 0.030
G11     134.2          24.5                9.6 +/-    3.09      19.0 +/-    3.09  0.030 / 0.030
G23     159.7          22.7                8.4 +/-    1.83      17.4 +/-    1.83  0.050 / 0.040
G27     41.6           18.8                3.6 +/-    1.77       8.2 +/-    1.77  0.040 / 0.040
G28     255.7          43.9                7.9 +/-    4.15      10.8 +/-    4.15  0.040 / 0.040
G30     320.1          50.6                5.9 +/-    0.72       7.4 +/-    0.72  0.040 / 0.030