PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/23-16:58:00
G01     258.8          38.2                8.5 +/-    3.12      12.7 +/-    3.12  0.040 / 0.040
G03     316.7          41.2                8.4 +/-    1.00      12.0 +/-    1.00  0.040 / 0.050
G10     134.6          9.8                13.5 +/-    1.46      37.7 +/-    1.46  0.050 / 0.080
G11     245.4          16.1               10.0 +/-    1.19      24.2 +/-    1.19  0.080 / 0.100
G14     52.1           46.0                7.7 +/-    0.83      10.2 +/-    0.83  0.110 / 0.200
G22     310.2          62.2                7.1 +/-    0.75       7.9 +/-    0.75  0.170 / 0.200
G25     45.1           13.8                7.0 +/-    2.76      18.0 +/-    2.76  0.030 / 0.040
G26     140.8          33.0               11.5 +/-    1.70      19.0 +/-    1.70  0.030 / 0.040
G31     43.5           64.1                8.8 +/-    0.38       9.6 +/-    0.38  0.060 / 0.080
G32     72.5           26.1                7.8 +/-    1.56      14.9 +/-    1.56  0.100 / 0.090