PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-18:28:00
G01     223.7          14.8                9.8 +/-   14.52      24.5 +/-   14.52  0.030 / 0.030
G03     274.6          70.5                8.2 +/-    0.39       8.7 +/-    0.39  0.040 / 0.030
G14     89.6           21.3                8.6 +/-    1.09      18.3 +/-    1.09  0.040 / 0.060
G16     148.2          46.1               11.5 +/-    1.13      15.3 +/-    1.13  0.040 / 0.060
G22     206.3          67.0               10.5 +/-    0.82      11.3 +/-    0.82  0.200 / 0.400
G23     308.8          38.2                7.7 +/-    2.10      11.5 +/-    2.10  0.300 / 0.480
G26     100.8          56.3                8.7 +/-    0.52      10.2 +/-    0.52  0.110 / 0.240
G31     45.5           33.2                6.4 +/-    0.85      10.5 +/-    0.85  0.130 / 0.220