PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/28-02:28:10
G01     38.0           10.4                3.5 +/-    4.61       9.7 +/-    4.61  0.050 / 0.060
G02     199.0          17.3                5.4 +/-    2.10      12.6 +/-    2.10  0.040 / 0.070
G06     174.6          46.6                5.7 +/-    0.56       7.5 +/-    0.56  0.230 / 0.190
G13     231.9          16.7                4.0 +/-    2.57       9.6 +/-    2.57  0.090 / 0.270
G17     11.1           65.6                3.0 +/-    0.34       3.2 +/-    0.34  0.030 / 0.030
G19     304.7          71.4                2.7 +/-    0.53       2.8 +/-    0.53  0.030 / 0.030
G24     313.6          25.0                1.7 +/-    1.25       3.3 +/-    1.25  0.040 / 0.040
G28     82.3           42.2                3.0 +/-    0.70       4.2 +/-    0.70  0.040 / 0.050
G30     155.2          16.4                5.5 +/-    1.84      13.2 +/-    1.84  0.090 / 0.220