PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/28-18:27:50
G01     268.6          40.5                9.6 +/-    2.22      13.9 +/-    2.22  0.040 / 0.050
G03     316.2          32.9                6.8 +/-    1.77      11.2 +/-    1.77  0.060 / 0.070
G10     130.7          16.0               10.9 +/-    1.48      26.6 +/-    1.48  0.040 / 0.050
G11     251.0          19.7                9.7 +/-    2.69      21.4 +/-    2.69  0.040 / 0.060
G14     44.4           49.7                7.8 +/-    0.83       9.9 +/-    0.83  0.030 / 0.030
G22     313.7          54.0                8.5 +/-    1.11      10.2 +/-    1.11  0.030 / 0.020
G25     51.2           16.5                7.2 +/-    2.06      17.2 +/-    2.06  0.070 / 0.070
G26     146.9          26.4               11.5 +/-    3.66      21.7 +/-    3.66  0.060 / 0.080
G31     51.8           72.4                8.4 +/-    0.32       8.8 +/-    0.32  0.080 / 0.190
G32     65.9           31.1                8.5 +/-    1.46      14.6 +/-    1.46  0.130 / 0.160