PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-09:58:00
G01     317.5          21.2                2.5 +/-    2.89       5.3 +/-    2.89  0.040 / 0.060
G08     256.9          11.1                3.7 +/-    2.66      10.0 +/-    2.66  0.040 / 0.070
G10     85.9           51.0                4.7 +/-    0.69       5.8 +/-    0.69  0.120 / 0.260
G11     300.4          23.9                3.7 +/-    1.39       7.4 +/-    1.39  0.120 / 0.230
G14     297.9          69.0                3.2 +/-    0.66       3.4 +/-    0.66  0.090 / 0.320
G18     301.2          42.4                5.1 +/-    0.67       7.1 +/-    0.67  0.100 / 0.450
G22     304.0          17.8                2.5 +/-    1.36       5.8 +/-    1.36  0.040 / 0.040
G25     98.4           10.2              -14.3 +/-   24.03     -39.6 +/-   24.03  0.030 / 0.040
G31     172.8          48.5                4.4 +/-    0.70       5.7 +/-    0.70  0.070 / 0.210
G32     18.2           63.2                2.8 +/-    0.59       3.1 +/-    0.59  0.080 / 0.200